golem_activity_registration_slot/models/golem_activity_registration_slot.py

@@ -33,3 +33,13 @@ class GolemActivityRegistrationSlot(models.Model):
                                 ondelete='cascade', index=True)
     hour_start = fields.Float('Start time')
     hour_stop = fields.Float('Stop time')
+
+    @api.constrains('hour_start', 'hour_stop')
+    def check_slot_hours(self):
+        """ Check slot hours consistence """
+        for slot in self:
+            if slot.hour_start < slot.activity_id.hour_start or \
+            slot.hour_stop > slot.activity_id.hour_stop:
+                verr = _(u'Slot start and stop must be between activity start and'
+                         ' activity stop.')
+                raise ValidationError(verr)